* In a microwave-safe bowl, combine the marshmallows and butter. Microwave, uncovered, on high for 45 seconds or until butter is melted and marshmallows are puffed. Add food coloring and mix well. Stir in the cornflakes.

* Shape into 3-in. wreaths on a waxed paper-lined baking sheet. Immediately press M&M's in three clusters of three for berries. Let stand until set. Yield: 8 wreaths.